This is a testharness.js-based test.
FAIL shared worker, addEventListener assert_equals: expected "" but got "event should be an ErrorEvent. filename was http://web-platform.test:8001/workers/semantics/reporting-errors/002.html, expected http://web-platform.test:8001/workers/semantics/reporting-errors/002.html#. "
Harness: the test ran to completion.

